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Cabletron Systems Cabletron BRIM-F6 Networking Manual

Other manuals for Cabletron BRIM-F6: User Manual
Manual is about: Workgroup Solutions

Summary of Cabletron BRIM-F6

  • Page 1

    Cabletron systems networking guide workgroup solutions.

  • Page 3: Notice

    I notice notice cabletron systems reserves the right to make changes in specifications and other information contained in this document without prior notice. The reader should in all cases consult cabletron systems to determine whether any such changes have been made. The hardware, firmware, or soft...

  • Page 4

    Notice ii.

  • Page 5: Contents

    Iii chapter 1 introduction using this guide ......................................................................................................................... 1-1 document organization ...............................................................................................................

  • Page 6

    Contents iv chapter 5 network design the role of the workgroup ........................................................................................................5-2 workgroup establishment criteria ....................................................................................5-3 selectin...

  • Page 7

    V contents appendix a charts and tables workgroup design tables .........................................................................................................A-1 ethernet..........................................................................................................................

  • Page 8

    Contents vi.

  • Page 9: Chapter 1

    1-1 chapter 1 introduction using this guide the cabletron systems networking guide - workgroup solutions is intended to provide much of the information necessary to allow network managers to design and evaluate workgroup networks using the cabletron systems family of standalone and stackable network...

  • Page 10: Document Organization

    Introduction 1-2 document organization document organization the following summarizes the organization of this manual: chapter 1, introduction , provides basic information about this document, including the organization and format of the document. Chapter 2, review of networking , describes the impo...

  • Page 11: Document Conventions

    Document conventions 1-3 introduction document conventions warnings and notifications formats references to chapters or sections within this document are printed in boldface type. References to other cabletron systems publications or documents are printed in italic type. Additional assistance the de...

  • Page 12: Related Documentation

    Introduction 1-4 related documentation related documentation the following publications may be of assistance to you in the design process. Several of these documents present information supplied in this guide in greater or lesser detail than they are presented here. • cabletron systems networking gu...

  • Page 13: Chapter 2

    2-1 chapter 2 review of networking this chapter discusses the defining characteristics of three major local area network (lan) technologies. Before discussing the selection of networking hardware for workgroup design, an understanding of the major standardized networking technologies available for t...

  • Page 14: Ethernet

    Review of networking 2-2 ethernet ethernet ethernet is a local area networking technology that was initially developed in the 1970s by the xerox corporation. It is based on the principles of workstations being responsible for their own transmissions and operation. It is sometimes referred to as 802....

  • Page 15: Fast Ethernet

    Fast ethernet 2-3 review of networking • aui length: the maximum attachment unit interface (aui) cable length is 50 m for connections from a transceiver to an ethernet device. The 50 m distance is the allowable maximum for standard aui, while a maximum length of 16.5 m has been set for office aui. •...

  • Page 16

    Review of networking 2-4 fast ethernet this signal path, two end stations and the repeaters between them, is called the network radius. Unlike standard ethernet networks, fast ethernet networks have a maximum network radius that may restrict the lengths of station cabling to less than the maximum al...

  • Page 17: Token Ring

    Token ring 2-5 review of networking fast ethernet networks designed using class ii repeaters may not exceed the following maximum network radii: - 200 m for homogenous 100base-tx networks - 320 m for homogenous 100base-fx networks • buffered uplinks: if a buffered uplink is used to make a connection...

  • Page 18

    Review of networking 2-6 token ring the transmission and reception of the token determines the amount of time that any station will have to transmit data during its turn, offering a measure of predictability not available in ethernet or fast ethernet. This predictability also allows token ring netwo...

  • Page 19

    Token ring 2-7 review of networking token ring networks can use a variety of physical cabling, including unshielded twisted pair (utp), shielded twisted pair (stp), or fiber optic cabling. The characteristics of the various cables can directly impact the operational limitations of a token ring netwo...

  • Page 20

    Review of networking 2-8 token ring • number of stations per 4 mbps token ring: in the same fashion as the limits imposed on cable lengths due to the operating speed of the network and type of cabling used, there are limitations on the number of stations that may be connected to a single ring using ...

  • Page 21

    Token ring 2-9 review of networking there are other limitations involved in the ieee 802.5 standard and the various cable specifications that are more detailed and complex. These limitations are covered in detail in the cabletron systems cabling guide and the cabletron systems token ring technology ...

  • Page 22

    Review of networking 2-10 token ring.

  • Page 23: Chapter 3

    3-1 chapter 3 the workgroup approach this chapter describes the basic operation and design of stackable and standalone devices and the methods used to meet common networking needs with these devices. Standalone and stackable networking devices are specialized and important parts of any end-to-end ne...

  • Page 24

    The workgroup approach 3-2 standalones standalones, the original networking devices standalone devices are the second oldest devices in local area networking, having been developed shortly after transceivers. The basic and most straightforward standalone device is the repeater or concentrator, a dev...

  • Page 25

    Standalones 3-3 the workgroup approach management of standalones as standalone devices became more complex, the need to control them became greater. The need to have some form of troubleshooting and control process in place for an eight-port repeater is minimal. In a repeated network where more than...

  • Page 26: Stackables

    The workgroup approach 3-4 stackables stackables to cope with the limited flexibility and expandability of standalones, the stackable hub, or stackable, was developed. The stackable design allowed a series of devices to act as a single device. With a stackable hub system, five separate devices could...

  • Page 27

    Stackables 3-5 the workgroup approach how stacks work stackable hubs communicate with one another through proprietary interconnection cables. The cables used in cabletron systems’ stackable hub solution are called hubstack interconnect cables. In ethernet stackable environments, these cables are sho...

  • Page 28

    The workgroup approach 3-6 stackables hubstack interconnect cables are connected in a particular sequence, from the out port of the first device in the stack to the in port of the next. This arrangement is repeated from device to device as more stackable hubs are incorporated in the stack, as shown ...

  • Page 29

    Stackables 3-7 the workgroup approach initially, network designers wishing to make connections from stacks to backbone technologies would be forced to add an additional standalone device to the network at the workgroup area. The addition of a standalone switch, bridge, or router that supported the t...

  • Page 30

    The workgroup approach 3-8 stackables in addition, stackable and standalone devices are typically available for only the most common of networking media: utp and stp. In situations where several users connect to the network with utp, a few make their connections with fiber optics, and there is a han...

  • Page 31: Chapter 4

    4-1 chapter 4 pims and brims this chapter deals with the special methods of connecting standalone and stackable devices to one another regardless of cabling media or networking technology. While many network design implementations are simple and straightforward, there are several that must incorpora...

  • Page 32

    Pims and brims 4-2 port interface modules the pims can be added at any time, allowing a network manager to add capabilities for special links at any time. Originally developed for use in the cabletron systems media interface module (mim) line for the mmac-fnb modular chassis, the pims allow a device...

  • Page 33

    Port interface modules 4-3 pims and brims the suffix of the pim’s product name, which follows the hyphen, specifies what media type and connector style the pim provides. Typically any alphabetic characters indicate the media, while numerical characters indicate a special connector type for that medi...

  • Page 34

    Pims and brims 4-4 port interface modules tpims tpims are token ring port interface modules. A tpim provides a single token ring connection. If the token ring device the tpim has been placed in allows it, the tpim connection can be used as either a station port or a ri/ro port. All tpims use active ...

  • Page 35

    Port interface modules 4-5 pims and brims apims the asynchronous transfer mode (atm) port interface modules, or apims, are designed to allow connection to differing atm networks, supporting not only different media, but different speeds of atm transmission. When selecting an apim, the network design...

  • Page 36

    Pims and brims 4-6 port interface modules table 4-1 provides basic information regarding the available pims and the connectors, media, and technologies they support. Table 4-1. Pim reference table pim technology media connector epim-a ethernet aui db15 (male) epim-c ethernet thin coaxial rg58 epim-f...

  • Page 37

    Port interface modules 4-7 pims and brims fpim-00 fddi multimode fiber optics fddi mic fpim-01 fddi multimode fiber optics sc fpim-02 fddi utp rj45 fpim-04 fddi stp rj45 fpim-05 fddi single mode fiber optics fddi mic fpim-05 fddi single mode fiber optics sc apim-11 atm (taxi) multimode fiber optics ...

  • Page 38

    Pims and brims 4-8 bridge/router interface modules bridge/router interface modules in the same way that cabletron systems supplied a method for connecting a single network technology to different types of media, the bridge/router interface module, or brim, allows one networking technology to be conn...

  • Page 39

    Bridge/router interface modules 4-9 pims and brims brim-f6 the brim-f6 is an fddi bridging device used to connect a standalone device to an fddi network. The brim-f6 provides two user-configurable fpim slots, allowing the network designer to specify and use any type of standard fddi media for connec...

  • Page 40

    Pims and brims 4-10 bridge/router interface modules the available brims and the technologies they support are detailed in table 4-2. This table can be useful for the selection of a brim when designing a workgroup requiring a connection to a particular networking technology. Table 4-2. Brim reference...

  • Page 41: Chapter 5

    5-1 chapter 5 network design the following chapter discusses some of the more common approaches to workgroup network design. The network design process is the formation of the network from initial concept to the plan of implementation. In this networking guide, for the sake of brevity, the process o...

  • Page 42: The Role of The Workgroup

    Network design 5-2 the role of the workgroup as this networking guide is concerned with the decisions made regarding networking hardware and not with the administration of networks or the specific uses to which they are put, several aspects of the overall process of network design are not treated in...

  • Page 43

    The role of the workgroup 5-3 network design workgroup establishment criteria this section examines some of the methods that may be used to divide the population mass of end users of a network into cohesive and defined workgroups. Geographical proximity organizing workgroups by geographical proximit...

  • Page 44

    Network design 5-4 the role of the workgroup departmental organization corporations, companies, and agencies all separate employees by primary function. No one person “does it all,” and most employees are specialists in the sense that they perform one function or a series of functions that are assig...

  • Page 45

    The role of the workgroup 5-5 network design as the creation of workgroups based on departmental organization mirrors the operation of the company, the expandability of the network is simplified; since departmental growth can often be predicted in stable or growing companies, the network can be desi...

  • Page 46

    Network design 5-6 the role of the workgroup common function segmentation by common function is often used to provide further division of the network within larger overall departments, or to facilitate the use of certain network applications by specific end users common throughout much of the depart...

  • Page 47

    The role of the workgroup 5-7 network design priority organization priority organization is a flexible term that refers to the network manager assigning devices to workgroups based on specific priorities. As such, it is the most flexible scheme for creating workgroups, because it is based solely on ...

  • Page 48

    Network design 5-8 the role of the workgroup priority organization of this manner in a single-segment network involves providing stations in the priority workgroups with qualities of media and network connection based on that priority. For example, the stations in the server farm might have redundan...

  • Page 49

    The role of the workgroup 5-9 network design selecting workgroup technologies the selection of a network technology at the workgroup level is a very important decision, and one that should be made only after careful consideration and evaluation. Before deciding on a network technology to be used by ...

  • Page 50: Creating A Manageable Plan

    Network design 5-10 creating a manageable plan creating a manageable plan a well thought-out and carefully designed network is still difficult to troubleshoot if no one else knows how it is organized. There may come a time when the designer of the network is not available, for whatever reason, and t...

  • Page 51

    Creating a manageable plan 5-11 network design • centralization and control - if you require more control over the networking hardware than you can get from locking it away, you can place many devices in one central location such as a network management office. For a small facility, it is entirely p...

  • Page 52

    Network design 5-12 creating a manageable plan use a standard, decipherable labeling code for cable and hardware. A label reading l2n5w2c1s243 may look like gibberish now, but if you know that the letter codes indicate locations or conditions of installation, it can be quite helpful. Table 5-1, belo...

  • Page 53

    Creating a manageable plan 5-13 network design single points of failure a single point of failure is any one device, cable or connection that, if it should fail or be removed from the network, would disable all or a sizable part of the network. Most cabletron systems hardware seeks to eliminate sing...

  • Page 54

    Network design 5-14 creating a manageable plan isolation and recovery no matter how much redundancy is designed into a network, and no matter how much the single points of failure are eliminated, the law of averages eventually catches up to any network, and a failure will occur. Once the failure doe...

  • Page 55: Network Expandability

    Network expandability 5-15 network design tracking changes your network maps will be used for keeping track of a large amount of information, which will naturally change over time. As the network grows or is altered, the devices that make up the network will change, new workgroups will be added, seg...

  • Page 56

    Network design 5-16 the workgroup as the network the workgroup as the network in many cases, the only network that a facility requires is a single workgroup. Depending on the bandwidth, segmentation, and security requirements of any facility, the single workgroup may be all that is needed. In these ...

  • Page 57

    The workgroup in the larger network 5-17 network design what is a backbone? A backbone is a network segment or cable which is used to provide for the interconnection of a number of smaller workgroups or self-contained networks. The outlying networks, workgroups, or hubs communicate with one another ...

  • Page 58

    Network design 5-18 the workgroup in the larger network the distributed backbone one method of creating a backbone network is to sequentially string all of the workgroup networks or hubs together. Cabling is run from one workgroup hub to the next, providing the necessary connections. This method of ...

  • Page 59

    The workgroup in the larger network 5-19 network design the collapsed backbone it is also possible to run cables from a central point, often a network management office or central wiring closet, out to each workgroup network and back. These cabling runs are then terminated at a central point such as...

  • Page 60

    Network design 5-20 the workgroup in the larger network • simplified troubleshooting - workgroups can be bypassed by simply reconfiguring a single patch panel. This can easily isolate a problem segment for troubleshooting, and keeps the backbone network from being kept in a fault condition. • modera...

  • Page 61

    The workgroup in the larger network 5-21 network design • simplified troubleshooting - the device collapsed backbone, by connecting the workgroups through a manageable device, provides not only simplified troubleshooting, but the ability to detect some backbone faults before they become network fail...

  • Page 62

    Network design 5-22 the workgroup in the larger network.

  • Page 63: Chapter 6

    6-1 chapter 6 ethernet this chapter describes in detail the processes and decisions involved in designing an ethernet workgroup using cabletron systems products. Once the proposed network has been broken into a number of workgroups, it is necessary to begin designing the actual solutions for those w...

  • Page 64: Ethernet Workgroup Devices

    Ethernet 6-2 ethernet workgroup devices ethernet workgroup devices the following sections describe the various cabletron systems networking devices that may be used in an ethernet workgroup implementation. These ethernet devices are divided into two categories - shared ethernet devices and switched ...

  • Page 65

    Ethernet workgroup devices 6-3 ethernet type the type column describes what functions the device in question performs. There are three basic types of devices covered by this table. Repeaters are standalone ethernet multiport repeaters. They count as a single repeater hop for purposes of calculating ...

  • Page 66

    Ethernet 6-4 ethernet workgroup devices switched devices ethernet segmentation and switching designs require some slightly different information and decisions. Several of the important factors to consider when selecting a segmentation-based workgroup scheme are listed along with the cabletron system...

  • Page 67: Ethernet Workgroup Design

    Ethernet workgroup design 6-5 ethernet ethernet workgroup design when designing a new workgroup, one of the first tasks to be confronted is the selection of a technology and an approach to the network. These selections are based on the organization of the workgroups, as discussed in chapter 5, netwo...

  • Page 68

    Ethernet 6-6 ethernet workgroup design abstracting the design process there are a series of logical stages that must be kept in mind when designing a network for any location, including the relatively simple home office. The first parts of the design process involve the decisions relating to the tec...

  • Page 69

    Ethernet workgroup design 6-7 ethernet some cabletron networking devices, through their support of pims and brims, will support a small number of connections using different media. For example, an ethernet network which is made up primarily of 10base-t links has a single multimode fiber optic connec...

  • Page 70

    Ethernet 6-8 ethernet workgroup design in an effort to provide some measure of differentiation between the varying levels of expense, the design tables which list a series of possible selections in a particular category attempt to organize the networking devices presented in ascending order of expen...

  • Page 71

    Ethernet workgroup design 6-9 ethernet the table below shows the selection field of cabletron systems shared ethernet workgroup devices. This is the same table that was displayed at the beginning of this chapter. During the course of the design example, sections of the table shown will be removed to...

  • Page 72

    Ethernet 6-10 ethernet workgroup design the media selected for the network is inexpensive category 3 utp jumper cabling. The low cost, durability, and ready availability of utp makes it by far the preferred media for this installation. If there were specific electrical noise or distance consideratio...

  • Page 73

    Ethernet workgroup design 6-11 ethernet the network designer checks the cabletron systems networking solutions product guide to examine the characteristics and full description of the mr9t. Deciding that the product will fit well into the installation, the network designer makes a call to the cablet...

  • Page 74

    Ethernet 6-12 ethernet workgroup design the small office location is an ideal place to examine the suitability of stackable networking devices. As these locations fall into a space between tiny workgroups and full-scale facility networks, they are the target location for stackables. The sections bel...

  • Page 75

    Ethernet workgroup design 6-13 ethernet expandability the simplicity and fluidity of expansion in a small office setting is of paramount importance. Every small office wants to expand, even if it is an addition of nothing more than a few additional networked computers. The ability to quickly and eff...

  • Page 76

    Ethernet 6-14 ethernet workgroup design design example the following example follows a network designer’s selection process for a small office ethernet network. As in the previous example, the network designer has already decided upon a networking technology (ethernet) and a media type (10base-t) fo...

  • Page 77

    Ethernet workgroup design 6-15 ethernet as the network will be using utp cabling, the sehi-22fl can be removed from the selection field. Since growth is expected to be minimal, the network designer turns to examine the products that can be used in standalone mode. Considering the remaining field of ...

  • Page 78

    Ethernet 6-16 ethernet workgroup design through an interconnect cable and have a stack providing 36 ports. This entire stack will act as a single repeater, and the management functions that are included in the sehi-24 will be applied also to the seh-22 in the stack. Figure 6-4. Ethernet small office...

  • Page 79

    Ethernet workgroup design 6-17 ethernet figure 6-5. Fddi backbone internetworking the main difference between the small office and the remote office is that a provision must be made to accommodate a connection to a different networking technology. In the case of cabletron systems workgroup products,...

  • Page 80

    Ethernet 6-18 ethernet workgroup design design example for an example of remote office workgroup configuration, we will build upon the previous small office example. Let us assume that there has been no growth of the small office network, but the pottery distributor has been purchased by a larger, n...

  • Page 81

    Ethernet workgroup design 6-19 ethernet figure 6-6. Ethernet remote office implementation the high-end department the high-end department is a workgroup with specialized needs, demanding high reliability or high throughput to each and every station. The high-end department typically consists of the ...

  • Page 82

    Ethernet 6-20 ethernet workgroup design management in a network using any form of segmentation, whether it is bridging, switching, or routing, management functionality is a part of the devices needed to create the network. Without some form of management, segmentation decisions can not be made by th...

  • Page 83

    Ethernet workgroup design 6-21 ethernet design example as an example, we can examine a network design that is being planned for a group of computer-aided design (cad) engineers in a large architectural firm. These cad designers want to replace their existing shared ethernet lan with a network that p...

  • Page 84

    Ethernet 6-22 ethernet workgroup design the network designer is looking for one or more per-port ethernet switches that can be used to make network connections to the stations in the cad department. The network designer examines the selection field of ethernet switches, shown in table 6-2. All of th...

  • Page 85

    Ethernet workgroup design 6-23 ethernet the network designer selects the esx-1320 and calculates that two esx-1320 switches, each containing one brim module for an fddi connection, will meet the needs of the cad department. The network designer would then go on to select the correct brims and any ne...

  • Page 86

    Ethernet 6-24 ethernet workgroup design permutations it is also possible to use an ethernet switch to connect a series of individual workgroups, rather than workstations or other devices. In these situations, the ethernet switch acts as a device collapsed backbone for the network. The design process...

  • Page 87: Chapter 7

    7-1 chapter 7 fast ethernet this chapter examines the decisions and selections that must be made when designing a fast ethernet workgroup solution. Should a fast ethernet workgroup solution be selected, the network designer has a specific series of issues to resolve and decisions to make before sele...

  • Page 88

    Fast ethernet 7-2 fast ethernet workgroup devices the columns in the table provide the same information that table 6-1 provides regarding ethernet devices. Switched devices cabletron systems produces one fast ethernet switching device, the fn100. The capabilities of the fn100, and the differing type...

  • Page 89

    Fast ethernet workgroup design 7-3 fast ethernet fast ethernet workgroup design the network design process for fast ethernet workgroups is nearly identical to that used for standard ethernet workgroups. The network designer must first break the network up into workgroups, if desired, determine how t...

  • Page 90

    Fast ethernet 7-4 fast ethernet workgroup design port count the first device in the stack, whether an intelligent sehi100tx-22 or non-intelligent seh100tx-22, will provide connections for up to 22 fast ethernet stations. For every additional 22 fast ethernet stations or fraction thereof, the network...

  • Page 91

    Fast ethernet workgroup design 7-5 fast ethernet the current network consists of 43 stations, including the shared servers and order entry system. The department currently operates on two standalone 24-port ethernet repeaters that are connected to one another with a single jumper cable. All stations...

  • Page 92

    Fast ethernet 7-6 fast ethernet workgroup design this expansion can continue until the stack contains five devices, the maximum number allowable with the stackable hub design. At this limitation, the stack will be capable of supporting up to 110 fast ethernet users. The network, as designed, will lo...

  • Page 93

    Fast ethernet workgroup design 7-7 fast ethernet abstracting the design process as the fast ethernet switch selection field, shown in table 7-2, contains only one device, the amount of decision-making remaining in the design process after the decision to use the fast ethernet technology is minimal. ...

  • Page 94

    Fast ethernet 7-8 fast ethernet workgroup design the network designer begins the design process by examining the available fast ethernet switch products. As the only devices available offering per-port fast ethernet switching are the four types of fn100 standalone switch, the selection field is very...

  • Page 95

    Fast ethernet workgroup design 7-9 fast ethernet figure 7-3. Fast ethernet high-end department solution fast ethernet as a backbone due to the high throughput provided by fast ethernet, it is conceivable that the technology could be used as a backbone solution to interconnect a series of workgroups....

  • Page 96

    Fast ethernet 7-10 fast ethernet workgroup design figure 7-4. Initial network design each departmental stack consists of one micrommac-24e and one or more seh-24 stackable hubs. In the initial configuration, the micrommac-24es have been configured with epim-a modules, which provide aui ports for con...

  • Page 97

    Fast ethernet workgroup design 7-11 fast ethernet the network designer examines the four types of fn100 fast ethernet switch, looking to see which models support front panel multimode fiber optic connections. The fn100-8fx and fn100-16fx both provide multimode fiber optic connections for 100base-fx ...

  • Page 98

    Fast ethernet 7-12 fast ethernet workgroup design once the backbone switch has been selected, changes need to be made to the workgroups that will connect to the switch itself. As they stand, the current workgroups cannot connect to the fast ethernet backbone network. In order to support fast etherne...

  • Page 99: Chapter 8

    8-1 chapter 8 token ring this chapter examines the decisions and selections that must be made when designing a token ring workgroup solution. The process of designing a token ring workgroup or a series of interconnected workgroups is somewhat different from the processes involved in designing an eth...

  • Page 100

    Token ring 8-2 token ring workgroup devices the available devices and the main distinctions between them are summarized in table 8-1. The columns in the table provide the same information that table 6-1 provides regarding ethernet devices. The port count field, again, is independent of the pims/brim...

  • Page 101: Token Ring Workgroup Design

    Token ring workgroup design 8-3 token ring token ring workgroup design once a network designer understands the fundamentals of token ring design, as described in the cabletron systems networking guide - mmac-fnb solutions, the design of a token ring workgroup using standalone and stackable products ...

  • Page 102

    Token ring 8-4 token ring workgroup design media it is assumed by this document that the selection of a networking media for the facility has already been completed before the hardware is examined. The media decision in the hardware selection stage of network design is one of ensuring that the selec...

  • Page 103

    Token ring workgroup design 8-5 token ring this extension of the ring can be used to allow the token ring network to connect widely-separated groups of stations in a single ring, or can be used to support greater numbers of users than a single token ring stack can accommodate. A token ring stack of ...

  • Page 104

    Token ring 8-6 token ring workgroup design when examining the media characteristics of the devices remaining in the selection field, the network designer immediately eliminates the sthi-42/44 from consideration. The network being designed will use utp cabling, which is not directly supported by the ...

  • Page 105

    Token ring workgroup design 8-7 token ring looking back at the initial selection field, the network designer locates the non-intelligent stackable devices and examines them for compliance with the needs of the network. The sth-22/24 non-intelligent stackable hub supports utp cabling, and provides ei...

  • Page 106

    Token ring 8-8 token ring workgroup design.

  • Page 107: Appendix A

    A-1 appendix a charts and tables this appendix provides a central location for a series of tables that contain useful network design information. Workgroup design tables ethernet a. These products can be managed through the addition of an intelligent stackable device to their stack. Table a-1. Share...

  • Page 108

    Charts and tables a-2 workgroup design tables fast ethernet a. These products can be managed through the addition of an intelligent stackable device to their stack. Table a-2. Ethernet workgroup switches name max management media port count switch interfaces pims/brims nbr-220 snmp – 0 2 2 epims nbr...

  • Page 109

    Workgroup design tables a-3 charts and tables token ring a. These products can be managed through the addition of an intelligent stackable device to their stack. Table a-4. Fast ethernet workgroup switches name max management media port count switch interfaces pims/brims fn100-8tx snmp utp 8 8 0 fn1...

  • Page 110

    Charts and tables a-4 workgroup design tables pims and brims table a-6. Pim reference table pim technology media connector epim-a ethernet aui db15 (male) epim-c ethernet thin coaxial rg58 epim-f1 ethernet multimode fiber optics sma epim-f2 ethernet multimode fiber optics st epim-f3 ethernet single ...

  • Page 111

    Workgroup design tables a-5 charts and tables fpim-00 fddi multimode fiber optics fddi mic fpim-01 fddi multimode fiber optics sc fpim-02 fddi utp rj45 fpim-04 fddi stp rj45 fpim-05 fddi single mode fiber optics fddi mic fpim-05 fddi single mode fiber optics sc apim-11 atm (taxi) multimode fiber opt...

  • Page 112

    Charts and tables a-6 workgroup design tables a. This table is subject to change as new brim modules and revised firmware are released. Table a-7. Brim reference table brim technology connector type brim-e6 ethernet epim brim-e100 fast ethernet epim brim-f6 fddi fpim (2) brim-a6 atm apim brim-a6dp a...

  • Page 113

    Networking standards and limitations a-7 charts and tables networking standards and limitations ethernet distance limitations general rules table a-9. Ethernet standard distance limitations media max distance thick coax 500 m thin coax 185 m standard aui 50 m office aui 16.5 m utp 100 m fiber optics...

  • Page 114

    Charts and tables a-8 networking standards and limitations fast ethernet distance limitations network radii table a-11. Fast ethernet (100base-tx/fx) distance limitations media max distance utp 100 m fiber optics (multimode) 412 m table a-12. Fast ethernet maximum network radii repeater class utp ut...

  • Page 115

    Networking standards and limitations a-9 charts and tables token ring distance limitations a. Ibm type 6 cable is recommended for use as jumper cabling only, and should not be used for facility cabling installations. Table a-13. Token ring maximums media circuitry cable type max # of stations max lo...

  • Page 116

    Charts and tables a-10 networking standards and limitations ring-in/ring-out limitations general rules table a-14. Ring-in/ring-out distances media max distance (4 mbps) max distance (16 mbps) shielded twisted pair 770 m 346 m unshielded twisted pair category 3/4 200 m 100 m category 5 250 m 120 m f...

  • Page 117

    Networking standards and limitations a-11 charts and tables fddi fddi distance limitations general rules a. Category 5 utp cabling only b. Ibm type 1 stp cabling only table a-16. Fddi distance limitations media pmd standard max link distance fiber optics (multimode) mmf-pmd 2 km fiber optics (single...

  • Page 118

    Charts and tables a-12 networking standards and limitations.

  • Page 119: Glossary

    Glossary-1 glossary this glossary provides brief descriptions of some of the recurrent terms in the main text, as well as related terms used in discussions of the relevant networking discussions. These descriptions are not intended to be comprehensive discussions of the subject matter. For further c...

  • Page 120

    Attenuation to client-server glossary-2 attenuation loss of signal power (measured in decibels) due to transmission through a cable. Attenuation is dependent on the type, manufacture and installation quality of cabling, and is expressed in units of loss per length, most often db/m. Aui attachment un...

  • Page 121

    Glossary-3 coaxial to decryption coaxial an ethernet media type which consists of a core of electrically conductive material surrounded by several layers of insulation and shielding. Concentrator a network device which allows multiple network ports in one location to share one physical interface to ...

  • Page 122

    Dedicated to fault-tolerance glossary-4 dedicated assigned to one purpose or function. Device (network) any discrete electronic item connected to a network which either transmits and receives information through it, facilitates that transmission and reception, or monitors the operation of the networ...

  • Page 123

    Glossary-5 fddi to impedance fddi fiber distributed data interface. A high-speed networking technology. Fddi requires that stations only transmit data when they have been given permission by the operation of the network, and dictates that stations will receive information at pre-determined intervals...

  • Page 124

    Interface to mac address glossary-6 interface a connection to a network. Unlike a port, an interface is not necessarily an available physical connector accessible through the front panel of a device. Interfaces may be used as backplane connections, or may be found only in the internal operation of a...

  • Page 125

    Glossary-7 mau to network radius mau multistation access unit. Mbps megabits per second. Mbps indicates the number of groups of 1000 bits of data that are being transmitted through an operating network. Mbps can be roughly assessed as a measure of the operational “speed” of the network. Media physic...

  • Page 126

    Node to protocol glossary-8 node any single end station on a network capable of receiving, processing, and transmitting packets. Nvram non-volatile random access memory. Memory which is protected from elimination during shutdown and between periods of activity, frequently through the use of batterie...

  • Page 127

    Glossary-9 pvc to server pvc polyvinyl chloride. A material commonly used in the fabrication of cable insulation. This term is used to describe a non-plenum rated insulating material. See also plenum. Pvc releases toxic smoke when burned. Redundant extra or contingent. A redundant system is one that...

  • Page 128

    Simm to switch glossary-10 simm single in-line memory module. A collection of random access memory (ram) microprocessors which are placed on a single, replaceable printed circuit board. These simms may be added to some devices to expand the capacity of certain types of memory. Single attached connec...

  • Page 129

    Glossary-11 tcp to utp tcp transmission control protocol. Terminal a device for displaying information and relaying communications. Terminals do not perform any processing of data, but instead access processing-capable systems and allow users to control that system. Throughput the rate at which disc...

  • Page 130

    Utp to utp glossary-12.

  • Page 131: Index

    Index-1 index numerics 100base-fx 2-3 100base-tx 2-3 a active circuitry 2-6 apim 4-5 assistance 1-3 b backbones collapsed 5-19 definition 5-17 device 5-20 distributed 5-18 fast ethernet 7-9 selection 5-21 bandwidth 2-2 bridge 3-2 brim 3-7, 4-8, 4-8 to 4-10 c chapter summaries 1-2 collapsed backbone ...

  • Page 132

    Index index-2 h help 1-3 high-end department 6-19, 7-6 home office 6-5 hubstack interconnect cables 3-5 i installation planning 5-11 interconnect cables 3-5 internetworking 4-8 introduction 1-1 n network growth 5-15 layout 5-10 planning 5-10 network map 5-14 network radius 2-4 networking services 1-...